Reflections
Which of the following does a rigid motion preserve?
a. Side lengths only
b. Angle measures only
c. Side lengths and angle measures
d. Neither side lengths nor angle measures
What is c?
What are the coordinates of the image T<-2,4>(2,-1)?
What is (0,3)?
Name the image of C(6, –4) under a rotation 90° about the origin.
What is C'(4,6)?
How many lines of symmetry does a circle have?
What is an infinite amount of lines of symmetry?
Find the midpoint between (3,-4) and (10,15).
What is (6.5,5.5)?
What are the coordinates of the image Ry-axis(2,-1)?
What is (-2, -1)?
What are the coordinates of the image T<-1,-2>(1, 2)?
What is (0,0)?
The point Z(4, –2) is rotated 180° about the origin. What is the image of Z?
What is Z'(-4,2)?
What is the order of a triangle?
What is 3?
Find the line parallel to y=3x+5 going through the point (5,7).
What is y=3x-8?
What are the coordinates of the image Ry=-2(4,5)?
What is (4,-9)?
Give the coordinates of the image T<-2,1>(GHJ) for G(0,0), H(3,6), J(12,-1).
What is G'(-2,1), H'(1,7), J'(10,0)?
The line segment TU with endpoints T(2, 1) and U(–5, 6) is rotated 270° about the origin. What is the coordinate of T′?
What is T'(1,-2)?
How many lines of symmetry does a decagon (regular polygon with 10 sides) have?
What is 10 lines of symmetry?
What is the inverse of the following statement?
If I get out of school early, I will go to Starbucks.
What is, If I do not get out of school early, I will not go to Starbucks.
Find the coordinates of the vertices after a reflection across x=-2:
A(1,3), B(2,0), C(6,2), D(5,3)
What is A'(-5, 3), B'(-6, 0), C'(-10, 2), D'(-9, 3)?
What is the translation rule used to transform ΔFGH to its image?
F(4, 2), G(-1, 1), H(10, 3)
F’(4, -2), G’(-1,-3), H’(10,-1)
What is T<0,-4>(ΔFGH)?
Find the coordinates of the vertices after a rotation 270° about the origin.
X(1,-3), M(2,0), B(4,0), S(4,-4)
What is X'(-3,-1), M'(0,-2), B'(0,-4), S'(-4,-4)?
What are the degrees of rotational symmetry for a regular pentagon? State whether it has point symmetry.
What is 72°, 144°, 216°, 288° and no point symmetry?
Find the distance from (5,-2) and (-1,-8).
What is the square root of 72?
What is the reflection rule used to transform ΔFGH to its image?
F(7,6), G(0,-4), H(-5,0)
F’(-5,6), G’(2,-4), H’(7,0)
What is Rx=1(ΔFGH)?
A triangle is translated with the following rule: T<-2,1>. Write a translation rule that would move the triangle back to its original position.
What is T<2,-1>?
A point R with coordinates (3, –1) is translated by〈–2, 3〉and then rotated 90°. What are the coordinates of R"?
What is R''(-2,1)?
What is the rotational symmetry for a decagon (regular polygon with 10 sides)? State whether it has point symmetry.
What is 36° and point symmetry?
Find the line perpendicular to y=3x+5 going through the point (-6,-17).
What is y=(-1/3)x-19?